1322313121 has 4 divisors (see below), whose sum is σ = 1322698644. Its totient is φ = 1321927600.

The previous prime is 1322313119. The next prime is 1322313127. The reversal of 1322313121 is 1213132231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1213132231 = 41 ⋅29588591.

It can be written as a sum of positive squares in 2 ways, for example, as 204347025 + 1117966096 = 14295^2 + 33436^2 .

It is a cyclic number.

It is not a de Polignac number, because 1322313121 - 2¹ = 1322313119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1322313127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187570 + ... + 194491.

It is an arithmetic number, because the mean of its divisors is an integer number (330674661).

Almost surely, 2^1322313121 is an apocalyptic number.

It is an amenable number.

1322313121 is a deficient number, since it is larger than the sum of its proper divisors (385523).

1322313121 is an equidigital number, since it uses as much as digits as its factorization.

1322313121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385522.

The product of its digits is 216, while the sum is 19.

The square root of 1322313121 is about 36363.6235955659. The cubic root of 1322313121 is about 1097.6016952169.

Adding to 1322313121 its reverse (1213132231), we get a palindrome (2535445352).

The spelling of 1322313121 in words is "one billion, three hundred twenty-two million, three hundred thirteen thousand, one hundred twenty-one".